Mechanism for operating shuttles of narrow-ware looms.



H. RIEHL. MBGHANISM FOR OPERATING SHUTTLES 0F NARROW WARE LOOMS.

APPLICATION num rEB.1,'19o5`.

Patented 0ct.20, 1908.

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r H. RIEHL. l MECHANISM FOR OPERATING SHUTTLBS 0F NARROW WARE LOOMS.

APPLICATION FILED PEB. 1I 1905.

901,834. A Patented 001;. 20, 1908.-

3 SHEETS-SHEET 2.

A uur@ H. RIEHL.

MBcHANlgM ron ormm'lmefA sHUTTLEs or NARROW WARE Looms.

APPLICATION FILED PEB. l, 1905.

Patented oct. 2o,-1908.

3 SHEETS-SHEET 3.

HENRY RIEHL, OF PHILADELPHIA, PENNSYLVANIA.-

MECHANISM FOR OPERATING SHUTTLES OF N ARROW-WARE LOOMS.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application filed February 1, 1905. Serial No. 243,618.

y To all whom it may concern.

Be it known that I, HENRY RIEHL, a citizen of the United States, residing in the city and county of Philadelphia, State oi Pennsylvania, have invented a new and useful Mechanism for Operating Shuttles of N arrow-Ware Looms, of which the following is a specification.

The obj ect of my invention is to produce a variable speed motion for shuttles.

A further object of my invention is to secure rapid movement of the shuttle during its passage through the shed and slow movement or-positive .dwell at the extremities of motion.

A further object of my invention is to provide a movement in which the extent of the variation in speed is adjustable.

Fioure 1 is a perspective view of the inside of a Toom showing the preferred form of my invention and the shuttle and operating rack controlled thereby. Fig. 2 is a perspective view of the shaft, surrounding frame member and double crank shown in Fig. 1. Fig. 3 is a side elevation partly in section of a portion of Fig. 1 showing the shaft gearing and double crank. Figs. 4, 5 and 6'are perspective views of gears shown in Fig. 3. Fig. 7 is a transverse section u on the line w-w of Fig. 3 looking towarrthedouble crank. Fig. 8 is an end elevation of a portion of my construction showing the gearing and the block and link used therein. Fig. 9 is a erspective view of the block in which. the link shown in perspective in Fig. 10 slides. Fig. l() is a perspective view of the link which slides in the block shown in per-- spective in Fig. 9. Fig. 11 is a perspective view of an adjustable stud and means of attachment for said stud. Fig. 12 is a partial section upon line rw Fig. 84 Figs. l13 and 14 are diagrammatic views upon an enlarged scale showing the path of the pin upon which the link of Fig. 10 is pivoted.

Similar' letters of reference indicate corresponding parts in the figures.

Referring to the drawings.' Upon the usual loom frame 1 having cross-pieces 2 and 3 thereon, I adjustably mount bearing 4 by bracket 5 and bolts 6, the bearing 4 is hollow permitting passage and internal bearing of shaft 7 therein. A portion of bearing 4 is' cylindrically finished upon the exterior at 8 to provide a bearing for sleeve 9 of the gear 10, one of whose arms 11 is provided with a slot 12 in which is secured a stud 15 upon which the gear 16 is ada ted to turn. This stud 15 is secured by t e nut 14 screwed upon the reduced end 13 of said stud. Gear 16 is provided with an extension 17 carrying guide 18 having elongated openings 19 and 2O for the adjustment of the bolts 21 by which crank22 is adjustably secured. The crank 22 has apertured ears 22 laterally projecting therefrom or attached thereto through which the bolts 21 project by means of which the crank is adjusted.

It will be evident that the crank 22 may be placed in the position shown against guide 18 and secured therein at any point by bolts 21 and that the amount of throw of said crank 22 from its center of revolution in stud 15 may be correspondingly varied. The crank may be located at any distance from the plane of bolts 21 and the eccentricity of the crank 22 with respect to stud 15 may be varied by changing the relative position of said stud 15 and crank 22 or made practically Zero by removing said crank and the part to which it is attached from said slide and replacing it on the same in a reversed position. The crank 22 affords bearing for the collar 23 of the link 24 which collar is retained thereon by nut 25.

The gear 16 is provided on its other side with an extension 26 which may evidently, however, be formed as a collar separate therefrom. The gear 10 is driven by the gear 27 mounted upon any suitable shaft 28 preferably the lay driving shaft. Meshing with gear 16 is a gear 29 provided for convenience with sleeve 30 which may evidently be made separate therefrom, the gear being attached to the immovable hollow eX- tension of bearing 4 either directly or as in the form shown through the sleeve by set.

screw 81.

It will be evident that the form of gearing as thus far described, constitutes a planetary system having the gear 29 fixed and the gear 10 rotatable about the same aXis and carryn ing pinion 16 about the fixed mesh therewith.

Continued revolution of the gear 27 and correspondingly of the gear 10 results in the rotation of the crank 22 uniformly about the stud 15. There is also revolution of the crank 22 about the shaft 7 but at varying rates of speed, inasmuch as during a portion of the revolution the pinion upon the stud 15 is being carried forward by the gear 10 while the crank 22 is being moved in a reverse digear 29 and in rection by its reverse rotation about its stud 15. This epicycloidal movement has. been illustrated diagrammatically in Fi s. 13 and 14, in thel first of which the speeia case has been considered of adjustment of the crank 22 to lie exactly inline with the pitch circle of pinion 16. That is, the distance between the centers of the stud 15 and the crank 22 is the same as the distance from the center of the stud 15 to the circumference of the pitch circle of the gear 16, so that the path of movement of said crank 22. is a true epicycloid. In Fig. 14 the case has been considered of the extension of this crank 22 beyond the line of the circumference of the pitch circle, as shown, resultingin accurate epitrochoidal movement of said crank 22, thereby causing a greater reverse movement of said crank 22 in space, due to its rotation about its own axis relative to its direct movement in space due to revolution about the shaft 7. This results in an actual reversal of movement of the shaft 7 during the time corresponding to the loop of Fig. 14.

Fig. 13 shows thirty-two positions representing a complete movement ofthe crank 22 about shaft 7.

Fig. 14 represents a portion of a revolution of the crank with positions noted at the same intervals as in Fig. 13.

vIn Fig. 13 A', A2, A3, A4, B', B2, B3', B4, C', C2, C2, C4, D', D2, D3, D4, E', E2, E3, E4, F', F2,

F3, F4, G', G2, G3, G4, H', H2, H3', H4 represent' the successive positions of the center of the crank 22' upon successive angular movements .of pin 15 eleven and a quarter (114) degrees about shaft 7. The correspondingl actual angular advance of crank22 for each of'these equal movements of the gear IOis represented by the angular movement upon the drawing relatively to each starting point, that is, by the angular distance separating the radii drawn through the successive points. It will be seen from this diagram that the movement of the crank 22 and therefore of the collar 23 of the link 24 pivoted upon it, is rapid in proximity to the end of the first and third quarters from the position shown in Fig 1 and slow, practically stationary, in

proximity to the extremity of the secondy and last quarters. Link 24 has been shown in this figure in the position in which it is placed at the beginning of the movement from that shown in Fig. 1 and pin 15 is indicated in its four positions at the four quarters.

In Fi 14 positions corresponding to A', A2, A3, '4, H', H2, H3, H4, are shown as A4, A2,.A3, A4, B', H', H2, H3`,H4.

In all of the views shown gear29 is twice the diameter and consequently contains twice the number ofteeth located upon gear 16', in order that there may be two complete cycles of epicyclodial movement of crank 22 foreach complete rotation of the gear 10. It will be evident that any even multiple relation may this movement be.

exist between gears 29 and 16. Thus if gear 2.9 be six times the sizeof gear 16 there would be six complete cycles. Other relations also might exist be-tween gears 29 and 16 if the movement be so timed. that the innermost epicycloidal portion is always coincident with the extremity of the shuttles movement. Other intermediate transmitting mechanisms than the double crank may then be necessary.

Link 24 passes through slide 33 of block 34 which is secured to the shaft 7 by the collar 35 and set screw 36. Link 24 is slotted at 37 in order that it may straddle shaft 7, which could, however, be avoided by placing block 34 at the end of the shaft. 1t willl be evident that link 24 and therefore block 34 and shaft 7 partake of variable angular movement due to the variablev angular movement of the crank 22.

Upon the opposite end of the shaft 7 from block 34 is located an adjustable double crank 38 comprising slotted arms 39 and 40 of which one is secured to the shaft 7. They are united by crank pin 42 and the arm 40 carries a crank pin 41. These pins are held by washers 43, 44 and bolts and nuts 45 and' 46. The positions of the crank pins are adjusted so that they are suitably placed in the slots to cause the desired throw. They are distant 180o. Straps 46X and 47 surroundthem and pass over pulleys 48 and 49 and reversely over'pulley 50, as indicated diagrammatically in Fig. 1. These are attached to opposite ends of rack51 so tha-t as one tightens upon said rack the other slackens and permits its movement, in whichever direction Rack 51 turns pinions 52 which are so arranged that always one of said pinions is in engagement withv the shuttl'e 53 moving in guides 54, 55 and passing through the shed during this movement. Lay swordy 56 is mounted on pin 58 which is capable of adjustment in slot 57. Pulleys 48 and 49 are supported upon shaft 59 between brackets 60'and 61.

In operation the crank describes an epicycloidal movement about the axis of the shaft and carries with it angularly the link or bar 24 which communicates the same angular movement to the shaft and double crank causing oppositemovement of the twostra s and consequent motion of the shuttle. T e crank pin movement may be changed from tru-e epicycloidal movement by adjustment of the crank toward or from its center ofrotation, the greatest variation in angular speeds of the crank being secured at the greatest distance from the center.

Where l". refer in the claims to epicycloid 1 wish to be understood as including' also those curves lying on either side thereof, formed under similar conditions of travel( and known as epitrochoids. In the true'epicycloidal movement there will be no absolute dwell but only a slow'motion ofthe crank at the extremities of the second and fourth quarter. Reduction of throw of the crank will increase the speed at this point relatively and reduce that at the extremity of the first and third quarters, reaching a limit when the crank is adjusted so as to have no throw, at which time its path becomes an exact circle. After the-crank passes the line of the pitch circle of the gear 16 iii its outward adjustment it reaches a point of absolute dwell where the curve of its travel retraces its path slightly, and further increase of throw results in the loop of Fig. le which may be greatly enlarged and in which there is ashort reversal of motion having the same effect in practice as a longer absolute dwell. The shuttle may thus be moved at any rate from true uniform motion to one having almost any desired amount of rest within the end guides and correspondingly increased speed in crossing the center.

The sun gear and the planetary gear operated about the same serve to impart to the shaft a; plurality of cycles of speed variation per rotation of the shaft.

It will be evident that various changes may be made by those skilled the art, which may come within the scope of my i'ivention and I do not therefore desire to be limited in every instance to the exact construction herein shown and described..

Having thus described my invention, what I .claim as new and desire to secure by Letters Patent, is

l. In shuttle operating mechanism, a shuttle-actuating rack, a shaft, connections between said rack and shaft, planetary gearing arranged to revolve about said shaft, a crank mounted upon the planet of said gearing and connections between said crank and said shaft.

2. In a shuttle operating mechanism, a shuttle-actuating rack, a shaft, means for connecting the shaft and rack, sliding means engaging said shaft, a crank engaging said sliding means and means for causing said crank to travel about the shaft in epicycloidal movement.

3. In a shuttle operating mechanism, a shaft, planetary gearing surrounding said shaft, a crank connected with the planet gear and means for forming a slid ing connection between said shaft and said crank.

4. In shuttle operating mechanism, planetary gearing, a rotatable shaft, a guide mounted transversely of the planet gear, a crank adjustable along said guide and means for connecting said crank and said shaft.

5. In a shuttle operating mechanism, a shaft, a crank, means for causing revolution of the crank to produce angular movement of the shaft, means for giving said crank epicycloidal movement about said shaft and means for changing the epicycloidal movement.

6. In a shuttle operating mechanism, a shaft, a double crank upon one end thereof, shuttle moving mechanism, straps connecting said double crank and shuttle moving mechanism and means, embodying a second crank adjustable radially for giving an angular moven'ient to said shaft variant with the crank adjustment.

7. In a shuttle operating mechanism, a shuttle-actuating rack, a shaft, a shuttle, meansfor causing the reciprocation of said rack by the rotation of said shaft, a crank movable about said shaft, sliding means connecting said crank and shaft, and means for adjustably varying the rate of angular movement of said crank about said shaft.

8. In a shuttle operating mechanism, a

shuttle-actuating rack, a shaft, means for converting the rotation of said shaft into reciprocations of said rack, a crank movable about said shaft and slidably connected therewith, and means for varying the movement of said crank from continuous variable angular movement to alternate reversals of movement.

9. In a shuttle operating mechanism, a driving shaft, a driven shaft, gearing intermediate said driving and driven shafts, means including lanetary gearing for securing adjustable re atire angular movement of said shafts, a shuttle-actuating rack, and means for varying the reciprocation of the rack in agreement with the variation of angular speed of said driven shaft.

l0. In a shuttle operating mechanism, a driving shaft, a spur gear thereon, a driven shaft, a gear loosely mounted about said driven shaft, a gear fixed about said driven shaft, a pinion mounted upon the loose gear and in mesh with said vfixed gear, a crank rigid with said pinion and having an adjustable throw, sliding means connecting said .crank and dri-ren shaft, a shuttle-actuating rack and means for converting the morement of said driven shaft into reciprocations of said rack.

11. In a shuttle operating mechanism, a shuttle actuating rack, straps connected thereto, a stationary member having outside and inside bearing surfaces, a shaft rotatable within said member, connections between the said shaft and said straps, a gear loosely mounted upon the outside of said member, a gear fixed to said stationary member, a pinion mounted upon said loose gear eccentrically thereof and in mesh with said fixed gear, a crank adjustable to different throws about the center of said pinion, slotted means for adjustably imparting motion from said crank to said shaft and means for driving the loose gear.

12. In a shuttle operating mechanism, a stationary member, a planetary gear mounted thereon, comprising a loose rotatable suport, a fixed gear concentric with said memer and a pinion mounted upon said loose rotatable support in mesh with said iixed gear, in combination with a crank mounted upon said pinion, an arm engaging with said crank, a shaft rotatable within said member and operatively connected vwith said arm, means for driving the loose rotatable support, and shuttle-actuating means connected with said shaft.

13. In loom mechanism, a shaft, shuttleactuating means operated thereby, a sun gear surrounding said shaft, a planet ear, a crank on said planet gear operative y connected with the shaft to impart angular movement thereto, and means for varying the throw of the crank.

14. In loom mechanism, a shaft, a shuttleactuating rack operated thereby, a crank movable about said shaft, a rotatable support for said crank rotating about said shaft, connections between said crank and said shaft, and means for varying the distance of said crank from said shaft.

15. In a shuttle operating mechanism, the combination of a shuttle-actuating rack, a shaft, a double crank upon the shaft, connections between the double crank and the shuttle-actuating rack, a link connected with said shaft, a sun gear about the axis of the shaft, a planet gear o erative about the sun gear, and an adjustab e crank connection be tween said planet gear and link. Y

16. In a shuttle operating mechanism, a shuttle, a shaft, means for producing a complete'reciprocation of said shuttle per rotation of the shaft, a planetary gearing whose sun and planet gears bear the relation of two to one, and means for converting the movement of said planet gear into variable angular rotation of said shaft.

17. In a shuttle operating mechanism, the combination of a shuttle-actuating rack, a shaft operatively connected therewith, and planetary gearing whose planet gear imparts angular movement to said shaft.

1S. In loom mechanism, a shaft, a shuttleactuating rack in operation driven thereby, a sun gear, a planet gear, a crank on said planet gear and means between said crank and shaft for transforming the revolution of said crank into angular movement of said shaft.

19. In loom mechanism, a shaft and means having its center of rotation in said shaft and surrounding the same for imparting thereto a plurality of cycles of speed variation during each rotation of the'shaft.

20. In a shuttle operating mechanism, a shuttle-actuating rack, a double crank operatively connected therewith, a shaft connected with said double crank, a link angularly movable in agreement with said shaft, a crank engaging said link, and planetary gearing supporting said crank and adj ustably connected therewith to provide variability of speed between said shaft and said planetary gearing.

21. In a shuttle operating mechanism, a driving shaft, a gear thereon, a driven shaft, a gear loosely mounted about said driven shaft, a gear fixed about said driven shaft, a pinion mounted upon the loose gear and meshing with said fixed gear, a crank rigid with said pinion, a slide connected to said shaft and a connection between the slide and said crank.

22. In a shuttle operating mechanism, planetary gearing, having the sun gear thereof iixed, a shaft concentric with said sun gear, means for revolving the planet gear, a crank upon said planet gear, a link connected with said crank, means for causing angular movement of said link to angularly move said shaft, and shuttle actuating mechanism driven by said shaft.

23. In shuttle operating mechanism, planetary gearing, a shaft concentric with the sun gear, means for revolving the planet gear, a crank on said planet gear, connections between said crank and said shaft to cause angular movement of said shaft with revolution of said crank, and shuttle-actuating mechanism driven by said shaft.

24. In shuttle operating mechanism, planetary gearing, a shaft concentric with the sun gear, means for revolving the planet gear, a crank radially adjustable with respect to and mounted upon the planet gear, a link rotatably connected with the crank, a slide angularly movable with said shaft said slide and link being relatively movable, and shuttleactuating mechanism driven by said shaft.

25. In shuttle operating mechanism, a sun gear, a planet gear, of smaller diameter than the sun gear, a shaft concentric with the sun gear, means for rotating and revolving the planet gear, a crank mounted to rotate and revolve with said planet gear, a connection between the crank and shaft which connection is angularly movable with respect to the crank and transversely movable with respect to the shaft, and shuttle-actuating mechanism driven by said shaft.

HENRY RIEHL.

Witnesses:

JOHN A. WIEDERSHEIM, C. D. MGVAY. 

